Mechanical movement.



MECHANICAL MVEMENT. (Application led May 10, 1897.) (N0 Model.) Y

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No; 692,696. Patented Feb. 4,1902.

' H. MuconNAck.

MECHANICAL MVEMENT.

(Application filed' May-10, 1897.) ma Model.) 2 sheets-sheet v2l Si?" v6:

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M ECHANICAL MOVEM ENT.

SPECIFICATION forming part of Letters Patent No. 692,696, dated February4, 1902. Application tiled May 10,1897. Serial No. 635,882. (No model.)

To ctZZ whom it may concern:

Beit known that I, HERBERT McCoRNAcx, a citizen of the United States,and a resident of Westchester, Chester county, Pennsylvania, haveinvented certain Improvements in Mechanical Movements, ot' which thefollowing is a specification.

My invention consists of a certaincombination of mechanism constitutinga novel mechanical movement whereby the speed of a rotary movement maybe greatly increased or decreased or a rotary movement may betransformed into a rapid vibrating, oscillating, or reciprocatingmovement or the reverse.

In the accompanying drawings, Figure l is a Vertical section of amechanical-movement device embodying my invention; and Fig. 2 is asectional plan view of part of the same on the line a: Fig. l.

I will :first describe the device as a means of increasing the speed ofrotary movement or transforming such movement into movement of adifferent character.

In Fig. l is shown a box or casing l, which has a suitable bearing for ashaft 2, said shaft constituting the driving-shaft of the device andhaving at its lower end a bevel-wheel 3, hereinafter termed the rotatinggear.

Screwing into or otherwise attached to the lower portion of the casing lis another casing 4, between which and a shoulder in said casing l isconfined a iange on a bevel- Wheel 6, hereinafter termed the fixed gear,which faces the rotating gear'3, but is located at some distancetherefrom, so as to provide a space between the two, said fixed gear 6being immovably held in position in the lower portion of the casing 1.In'the hub of said fixed gear 6 is a bearing for a spherical enlargementor ball 7 upon a shaft 8, said bearing consisting of alower block 9,adapted to a seat in the hub of the fixed` gear 6, and an upper blocklO, confined in place by a cap l1, screwed into said hub. Y

To the shaft S is rigidly secured, by means of a iiange or collar 12 andnut 13, a duplex wabble gear-wheel 14, having teeth adapted to mesh withthe teeth of the rotating gear 3 and other teeth adapted to mesh withthe teeth of the fixed gear 6. The axis of the shaft 8 isinelined inrespect to the axis of the shaft 2, so that when the wabble-gearlet isin full mesh with the rotating gear 3 at one side it is at thesame sidefree from mesh with the fixed gear V6, while at a diametrically oppositepoint the wabble-'gear 14 is free from mesh with the rotating gear 3 andis in full mesh with the fixed gear The wabble-gear 14 being thuspreventedfrom turning by reason ot' its engagement with the xed gear 6,

theeffect of the rotation of the'rotating gear `3 is to cause theoscillation ofsaid wabble gear-wheel. As the wabble-gear moves downwardat oneside it rises at the other side. l-lence one or moreof its teethare always in full mesh with the rotating gear 3, the point of operativeengagement traveling around the rabble-gear as the latter swings. Thereis a dierence of one or more teeth in the inter- `meshing.portions ofthe wabble-gear and rotating gear. On each rotation of the shaft 2 therewill be as many complete oscillations of the wabble-gear 14 as there areteeth in the rotating gear 3, and the lower end of the shaft 8 willdescribe a complete circle foreach oscillation of the Wabble-gear, andthis circular movement of the lower end of the shaft 8 may cause rotary,oscillating, vibrating, or reciprocating movement of the part to bedriven by proper mechanical connection with said driven part, or themovement of the Wabble-gear may be transformed into rotary or othermovement by many devices within the knowledge of the skilled mechanic.

As' shown in the drawings, the deviceis designed to impart rotarymovement to a wheel l5, which is mounted so as to b`e free to rotateupon astud 16 and has in its upper face i a transverse groove or slot17, with which engages the lower portion of a shoe 18, having therein anopening for the reception of the shaft 8, a screw-plug 19 at the lowerend of said opening having a recess for the receptionof a ball 20, uponwhich the lower end of the shaft 8 bears. As the shaft S swings throughits circular path, therefore, the-shoe I8 is caused to rotate around anaxis coincident with that of the wheel l5, and hence imparte.A rotarymovement to said'wheel. The upper end of the stud 16 projects in to anaxial opening in the lower end of the shoe 18 and serves to verticallysupport the shoe and to properly center the same and maintain the IYOOaxis of the wabble-gear shaftin its proper angular relation tothe axisof the driving-shaft, thus preventing the wabble-gear from assuming aposition where it is not properly in mesh with the rotating gear. Theopening formed in the lower end of the shoe 1S is slightly greater indiameter than the projecting upper end of the stud 1G, so as to preventthe transmission of vibrations from the wabble-gear shaft to the stud orwheel 15.

As shown in the drawings, the high-speed shaft is a shaft 22, which isdriven by the wheel 15, the latter having around its periphery inclinedteeth engaging with a spiral gear 2l on said shaft 22, which is mountedin suitable bearings at one side of the casing 4f. This, however, formsno essential part of my invention.

On the fixed gear 6 is a projecting ring 24, the upper face of whichlies in the pitch-cone of said fixed gear, as shown by the dotted linesw in Fig. l, and as the wabble-gear oscillates its under face 25 rollson the upper face of the ring 24, so as to provide a hearing-surfacewhich limits the approach of the two gears and governs the meshing ofthe teeth.

I have shown the wabble-gear le as composed of a toothed rim flxedlymounted upon an independent center or hub; but it will be evident thatthe gear may be made in one piece, if desired.

In carrying out my invention the combination of rotating gear, fixedgear, and wabblegear may be used in connection with any desired form ofuniversal mounting for the wabble-gear, and, on the other hand, theballand-socket bearingfor the wabble-gear shaft maybe employed whenmeans other than the fixed gear is used to preventrotation of saidwabble-gear.

It will be evident that the device which forms the subject of myinvention may be used in a manner directly the reverse of that which Ihave described--that is to say, for decreasing instead of increasingspeed of rotary movement or for transforming into rotary movementmovement of a different character. For instance,in the constructionshown in the drawings the shaft 22 might be the drivingshaft and theshaft 2 the driven shaft. It will be evident also that, considering thegreat increase or decrease of speed obtained, the mechanical movementconstituting the subject of my invention is extremely strong andcompact. Hence my in- Vention is available for use in all cases wherethese qualities are desired.

Having thus described my invention, I claim and desire to secure byLetters Pat- @lltl. A mechanical movement in which are combined arotating gear, a fixed gear facing the same, a universally-mounted shafthaving an axis inclined in respect to the axis of the shaft which drivesthe rotating gear, and a duplex wabhle-gear secured to said inclinedshaft so as to swing between the rotating gear and the iixed gear andmesh with one on one side of its center and with the other on theopposite side of its center, whereby the swinging movement of thewabble-gear is caused by the action of the teeth of the gears with whichit meshes, substantially as specified.

2. A mechanical movement in which are combined a rotating gear,awabble-gear adapted to mesh therewith, provision for preventing rotationof said wabble-gear, a wabblegear shaft mounted so as to swing in anydirection, a shoe mounted upon said wabblegear shaft, and a wheel withwhich said shoe engages the axis of the wabble-gear shaft being inclinedin respect to the axis of the said wheel, substantially as specified.

3. A mechanical movement in which are combi ned a rotating gear, awabble-gear meshing therewith, provision for preventing rotation of saidwabble-gear, a wabble-gear shaft mounted so as to be free to swing inany direct-ion, a shoe mounted upon said shaft, a wheel with which saidshoe engages, and a centering pin or projection entering an opening insaid shoe in line with the axis of the said wheel.

I. A mechanical movement in which are combined a wabble-gear and a gearmeshing therewith, said gears having bearing contact independent of thetoothed portions of the gears but exerting no pressure upon theWabble-gear to cause swinging movement of the same, substantially asspecied.

5. A mechanical movement in which are combined a wabble-gear,a gearmeshing therewith, and bearing contact independent of the teeth of thegears and serving to restrict the approach of the latter, said bearingcontact lying in the pitch-cone of Ithe" gear with which the wabble-gearengages.

6. A mechanical movement in which are combined a rotating gear, a fixedgear opposed thereto, a wabble-gear swingingbetween the two, and abearing contact for said wabble-gear, independent of the teeth of thegears, and lying in the pitch-cone of said fixed gear.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERBERT MCCORNACK.

VVit-nesses':

NELLIE IWI. LAC-Ev, XVM. S. VINDLE.

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